Pulse or digital communications – Bandwidth reduction or expansion – Television or motion video signal
Reexamination Certificate
2006-05-02
2006-05-02
Le, Vu (Department: 2613)
Pulse or digital communications
Bandwidth reduction or expansion
Television or motion video signal
C348S700000, C348S451000, C348S558000
Reexamination Certificate
active
07039111
ABSTRACT:
A film mode detecting apparatus and method for detecting a film mode by using a periodicity of motion vectors having high autocorrelativity. A motion vector calculating unit adds a size of motion vectors with respect to each field, thereby outputting a first computing value. A peak value eliminating unit detects a peak value from the first computing value, and if the peak value is detected, eliminates the peak value from the first computing value and outputs a resultant value. A mode detecting unit compares an autocorrelation coefficient with a predetermined threshold, thereby outputting a film mode detection signal. The autocorrelation coefficient is obtained from an input signal inputted from the peak value eliminating unit and a delayed signal delayed from the input signal. A mode determining unit determines a film mode when the film mode detection signal is input as often as, or more often than, a first reference value. A scene change detecting unit is further provided for detecting a scene change when the peak value is detected by the maximum value detecting unit, by comparing the detected peak value with a previously detected peak value, and outputting a scene change detection signal to the mode determining unit. In this case, the mode determining unit determines whether it is a film mode or not in accordance with the detection result from the scene change detecting unit based on a second reference value which is greater than the first reference value.
REFERENCES:
patent: 5365273 (1994-11-01), Correa et al.
patent: 5610662 (1997-03-01), Hackett
patent: 5734420 (1998-03-01), Lee et al.
patent: 5742351 (1998-04-01), Guede
patent: 6108041 (2000-08-01), Faroudja et al.
patent: 6897903 (2005-05-01), Hu
patent: 2001/0002853 (2001-06-01), Lim, II
patent: 2001/0021224 (2001-09-01), Larkin et al.
Hilman et al, “Using Motion-Compensated Frame-Rate Conversion for the Correction of 3:2 Pulldown Artifacts in Video Sequences”, IEEE Transactions On Circuits and Systems For Video Technology, vol. 10, No. 6, pp. 869-877, Sep. 2000.
Le Vu
Samsung Electronics Co,. Ltd.
Sughrue & Mion, PLLC
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